*
* Adjusted for BusyBox by Erik Andersen <andersen@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-//#include <sys/ioctl.h>
+//usage:#define setkeycodes_trivial_usage
+//usage: "SCANCODE KEYCODE..."
+//usage:#define setkeycodes_full_usage "\n\n"
+//usage: "Set entries into the kernel's scancode-to-keycode map,\n"
+//usage: "allowing unusual keyboards to generate usable keycodes.\n\n"
+//usage: "SCANCODE may be either xx or e0xx (hexadecimal),\n"
+//usage: "and KEYCODE is given in decimal."
+//usage:
+//usage:#define setkeycodes_example_usage
+//usage: "$ setkeycodes e030 127\n"
+
#include "libbb.h"
/* From <linux/kd.h> */
int setkeycodes_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setkeycodes_main(int argc, char **argv)
{
- int fd, sc;
+ int fd;
struct kbkeycode a;
- if (argc % 2 != 1 || argc < 2) {
+ if (!(argc & 1) /* if even */ || argc < 2) {
bb_show_usage();
}
- fd = get_console_fd();
+ fd = get_console_fd_or_die();
- while (argc > 2) {
- a.keycode = xatou_range(argv[2], 0, 127);
- a.scancode = sc = xstrtoul_range(argv[1], 16, 0, 255);
- if (a.scancode > 127) {
- a.scancode -= 0xe000;
- a.scancode += 128;
+ while (argv[1]) {
+ int sc = xstrtoul_range(argv[1], 16, 0, 0xe07f);
+ if (sc >= 0xe000) {
+ sc -= 0xe000;
+ sc += 0x0080;
}
+ a.scancode = sc;
+ a.keycode = xatou_range(argv[2], 0, 255);
ioctl_or_perror_and_die(fd, KDSETKEYCODE, &a,
- "failed to set SCANCODE %x to KEYCODE %d",
+ "can't set SCANCODE %x to KEYCODE %d",
sc, a.keycode);
- argc -= 2;
argv += 2;
}
return EXIT_SUCCESS;